Dave in particular seems hopeful WWE will do a better job at creating stars now that they won't be limited to Vince's extremely narrow vision of what a star is.
WWE main roster creative has become so glacially stagnant literally anyone else would be doing a better job by default, but HHH really got exposed when he had to do long term booking instead of just 5-6 month callup cycles.
Also there's the fact that all the positive buzz NXT ever got was from them being the alternative to main roster WWE where guys were actually allowed to have good matches and not be stuck with career ending gimmicks. When AEW came along, we got a real alternative that wasn't part of the extended WWE Universe and NXT started looking more like the corporate sock puppet it always was.
Plus as NXT got more well received, Hunter started getting high on his own farts and booked every NXT main event to have to be a Mania style overdramatic experience with a million "shocked someone kicked out of a move" faces.